ASTM D2569 Standard Test Method for Distillation of Pitch
10. Report
10.1 Report the results of the distillation test as percentages, to the nearest 0.1 %, based on the dry sample weight.
11. Precision and Bias
11.1 The following criteria shall be used for judging the acceptability of the results (95 % confidence level):
11.1.1 Repeatability - Duplicate values by the same operator shall not be considered suspect unless they differ by more than 1.5 percentage points for the total distillate to 360°C.
11.1.2 Reproducibility - The values reported by each of two laboratories, representing the arithmetic average of duplicate determinations, shall not be considered suspect unless they differ by more than 3.0 percentage points for the total distillate to 360°C.
11.1.3 Bias - This test method has no bias because the value of distillation of pitch is determined in terms of this test method.
12. Keywords
12.1 distill; distillate; distillation; fractionation; pitch
